Declare license and copyright information using REUSE

We now use https://reuse.software/ to declare license and copyright
information in a machine readable format.

The copyright statement for SAP open source projects was updated
to give credit to project contributors not employed by SAP.

.ci/build

@@ -1,17 +1,7 @@
 #!/usr/bin/env bash
-# Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file.
+# SPDX-FileCopyrightText: 2019 SAP SE or an SAP affiliate company and Gardener contributors.
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+#  SPDX-License-Identifier: Apache-2.0
 
 set -e
 

.ci/check

@@ -1,17 +1,7 @@
 #!/usr/bin/env bash
-# Copyright (c) 2019 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file.
+# SPDX-FileCopyrightText: 2019 SAP SE or an SAP affiliate company and Gardener contributors.
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0
 set -e
 
 # For the check step concourse will set the following environment variables:

.ci/pipeline_definitions

@@ -1,3 +1,6 @@
+# SPDX-FileCopyrightText: 2019 SAP SE or an SAP affiliate company and Gardener contributors.
+#
+# SPDX-License-Identifier: Apache-2.0
 dependency-watchdog:
   template: 'default'
   base_definition:

.ci/test

@@ -1,17 +1,7 @@
 #!/usr/bin/env bash
-# Copyright (c) 2018 SAP SE or an SAP affiliate company. All rights reserved. This file is licensed under the Apache Software License, v. 2 except as noted otherwise in the LICENSE file.
+# SPDX-FileCopyrightText: 2018 SAP SE or an SAP affiliate company and Gardener contributors.
 #
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
+# SPDX-License-Identifier: Apache-2.0
 set -e
 
 # For the test step concourse will set the following environment variables: